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platform: clint: Allow running on 32-bit systems

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Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Alistair Francis
2019-01-22 16:50:50 -08:00
committed by Anup Patel
parent f4cf6da7ff
commit f9b033e577
1 changed files with 24 additions and 0 deletions
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24
platform/common/sys/clint.c
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@@ -87,7 +87,15 @@ static volatile u64 *clint_time_cmp;
u64 clint_timer_value(void) u64 clint_timer_value(void)
{ {
#if __riscv_xlen == 64
return readq_relaxed(clint_time_val); return readq_relaxed(clint_time_val);
#else
u64 tmp;
tmp = readl_relaxed((void *)clint_time_val + 0x04);
tmp <<= 32;
tmp |= readl_relaxed(clint_time_val);
return tmp;
#endif
} }
void clint_timer_event_stop(void) void clint_timer_event_stop(void)
@@ -98,7 +106,12 @@ void clint_timer_event_stop(void)
return; return;
/* Clear CLINT Time Compare */ /* Clear CLINT Time Compare */
#if __riscv_xlen == 64
writeq_relaxed(-1ULL, &clint_time_cmp[target_hart]); writeq_relaxed(-1ULL, &clint_time_cmp[target_hart]);
#else
writel_relaxed(-1UL, &clint_time_cmp[target_hart]);
writel_relaxed(-1UL, (void *)(&clint_time_cmp[target_hart]) + 0x04);
#endif
} }
void clint_timer_event_start(u64 next_event) void clint_timer_event_start(u64 next_event)
@@ -109,7 +122,13 @@ void clint_timer_event_start(u64 next_event)
return; return;
/* Program CLINT Time Compare */ /* Program CLINT Time Compare */
#if __riscv_xlen == 64
writeq_relaxed(next_event, &clint_time_cmp[target_hart]); writeq_relaxed(next_event, &clint_time_cmp[target_hart]);
#else
u32 mask = -1UL;
writel_relaxed(next_event & mask, &clint_time_cmp[target_hart]);
writel_relaxed(next_event >> 32, (void *)(&clint_time_cmp[target_hart]) + 0x04);
#endif
} }
int clint_warm_timer_init(void) int clint_warm_timer_init(void)
@@ -121,7 +140,12 @@ int clint_warm_timer_init(void)
return -1; return -1;
/* Clear CLINT Time Compare */ /* Clear CLINT Time Compare */
#if __riscv_xlen == 64
writeq_relaxed(-1ULL, &clint_time_cmp[target_hart]); writeq_relaxed(-1ULL, &clint_time_cmp[target_hart]);
#else
writel_relaxed(-1UL, &clint_time_cmp[target_hart]);
writel_relaxed(-1UL, (void *)(&clint_time_cmp[target_hart]) + 0x04);
#endif
return 0; return 0;
} }